Commit Graph

739053 Commits

Author SHA1 Message Date
Stephen Hemminger
68633edaef hv_netvsc: use napi_schedule_irqoff
Since the netvsc_channel_cb is already called in interrupt
context from vmbus, there is no need to do irqsave/restore.

Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-04 22:18:20 -05:00
Stephen Hemminger
d64e38ae69 hv_netvsc: fix race in napi poll when rescheduling
There is a race between napi_reschedule and re-enabling interrupts
which could lead to missed host interrrupts.  This occurs when
interrupts are re-enabled (hv_end_read) and vmbus irq callback
(netvsc_channel_cb) has already scheduled NAPI.

Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-04 22:18:20 -05:00
Stephen Hemminger
a7483ec026 hv_netvsc: cancel subchannel setup before halting device
Block setup of multiple channels earlier in the teardown
process. This avoids possible races between halt and subchannel
initialization.

Suggested-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-04 22:18:20 -05:00
Stephen Hemminger
fcfb4a00d1 hv_netvsc: fix error unwind handling if vmbus_open fails
Need to delete NAPI association if vmbus_open fails.

Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-04 22:18:20 -05:00
Stephen Hemminger
f4950e4586 hv_netvsc: only wake transmit queue if link is up
Don't wake transmit queues if link is not up yet.

Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-04 22:18:20 -05:00
Stephen Hemminger
12f69661a4 hv_netvsc: avoid retry on send during shutdown
Change the initialization order so that the device is ready to transmit
(ie connect vsp is completed) before setting the internal reference
to the device with RCU.

This avoids any races on initialization and prevents retry issues
on shutdown.

Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-04 22:18:20 -05:00
Jason Wang
3cc81a9aac virtio-net: re enable XDP_REDIRECT for mergeable buffer
XDP_REDIRECT support for mergeable buffer was removed since commit
7324f5399b ("virtio_net: disable XDP_REDIRECT in receive_mergeable()
case"). This is because we don't reserve enough tailroom for struct
skb_shared_info which breaks XDP assumption. So this patch fixes this
by reserving enough tailroom and using fixed size of rx buffer.

Signed-off-by: Jason Wang <jasowang@redhat.com>
Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-04 22:16:36 -05:00
David S. Miller
ca435f88c1 This cleanup patchset includes the following patches:
- bump version strings, by Simon Wunderlich
 
  - bump copyright years, by Sven Eckelmann
 
  - fix macro indendation for checkpatch, by Sven Eckelmann
 
  - fix comparison operator for bool returning functions,
    by Sven Eckelmann
 
  - assume 2-byte packet alignments for all packet types,
    by Matthias Schiffer
 -----BEGIN PGP SIGNATURE-----
 
 iQJKBAABCgA0FiEE1ilQI7G+y+fdhnrfoSvjmEKSnqEFAlqZkD8WHHN3QHNpbW9u
 d3VuZGVybGljaC5kZQAKCRChK+OYQpKeoaQeD/0cHQz/x6ZuXF6MDrwOf78oDvjw
 AksSt2e/055Ommhzplz0Aa0hthK7Xb7+dBD+caAOxBwrXtWsWc6H5fsfeiBCTntH
 PxDyS68o+iZDonquaOKz+gtILiPbUE0hG3hMizWdF95nDtsJ3rHoL3fU7Wo9eZNq
 WtlwCCloyEZeGfPtpJXCo7QmGOvTLk+Qt+pkGWKHFIIXNaxa9yfqp7JCFRfyrkl3
 7wb4+YaZCCUDSUiDW6SQY0rTx3bxJPfHOnrG7rB6chmGVyyssH+tjhLP52331/oI
 dloVSz96pilAcKivbhLRENcIcUNuj9mHyV6rFM4/paYeDOGotoA5DCkEi3NSTYdN
 p2UiDBJZfiA6M40AxmLYK5mLPWYLGpyrZNBNskemrQdlrXDLU/D6UWMUKbFhouPx
 AjgX+Yk7giqXdxUjCcaFsjDBf2SxC/Xjv39qvPR0P4rW4xD/Y3xqHDJ8yLrPj7Si
 M1NJv6E+gBkIQg+JuoWeQb3kvbtNQsu49XBbrYlUrdPgkJhVC6DIP5jie/TutAGz
 9OU1cdDZNUVkI6+iuGP8B3Aj0Mj+zlpXHvhBa5R9duAumdt0uiqwU98k4h89yix+
 GK1K9dPyW/r9qmwtemaZH8RQ6iqoxBPVZ43PoM7W/xe04IwslPJWyZ8GT64Yqekl
 9m5HhMLLiJx9pklR9w==
 =KJdN
 -----END PGP SIGNATURE-----

Merge tag 'batadv-next-for-davem-20180302' of git://git.open-mesh.org/linux-merge

Simon Wunderlich says:

====================
This cleanup patchset includes the following patches:

 - bump version strings, by Simon Wunderlich

 - bump copyright years, by Sven Eckelmann

 - fix macro indendation for checkpatch, by Sven Eckelmann

 - fix comparison operator for bool returning functions,
   by Sven Eckelmann

 - assume 2-byte packet alignments for all packet types,
   by Matthias Schiffer
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-04 18:45:39 -05:00
Guillaume Nault
77f840e3e5 ppp: prevent unregistered channels from connecting to PPP units
PPP units don't hold any reference on the channels connected to it.
It is the channel's responsibility to ensure that it disconnects from
its unit before being destroyed.
In practice, this is ensured by ppp_unregister_channel() disconnecting
the channel from the unit before dropping a reference on the channel.

However, it is possible for an unregistered channel to connect to a PPP
unit: register a channel with ppp_register_net_channel(), attach a
/dev/ppp file to it with ioctl(PPPIOCATTCHAN), unregister the channel
with ppp_unregister_channel() and finally connect the /dev/ppp file to
a PPP unit with ioctl(PPPIOCCONNECT).

Once in this situation, the channel is only held by the /dev/ppp file,
which can be released at anytime and free the channel without letting
the parent PPP unit know. Then the ppp structure ends up with dangling
pointers in its ->channels list.

Prevent this scenario by forbidding unregistered channels from
connecting to PPP units. This maintains the code logic by keeping
ppp_unregister_channel() responsible from disconnecting the channel if
necessary and avoids modification on the reference counting mechanism.

This issue seems to predate git history (successfully reproduced on
Linux 2.6.26 and earlier PPP commits are unrelated).

Signed-off-by: Guillaume Nault <g.nault@alphalink.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-04 18:43:44 -05:00
Paolo Abeni
3518e40b3c ipvlan: forbid vlan devices on top of ipvlan
Currently we allow the creation of 8021q devices on top of
ipvlan, but such devices are nonfunctional, as the underlying
ipvlan rx_hanlder hook can't match the relevant traffic.

Be explicit and forbid the creation of such nonfunctional devices.

Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-04 18:39:54 -05:00
Davide Caratti
79f3a8e662 tc-testing: skbmod: fix match value of ethertype
iproute2 print_skbmod() prints the configured ethertype using format 0x%X:
therefore, test 9aa8 systematically fails, because it configures action #4
using ethertype 0x0031, and expects 0x0031 when it reads it back. Changing
the expected value to 0x31 lets the test result 'not ok' become 'ok'.

tested with:
 # ./tdc.py -e 9aa8
 Test 9aa8: Get a single skbmod action from a list
 All test results:

 1..1
 ok 1 9aa8 Get a single skbmod action from a list

Fixes: cf797ac49b ("tc-testing: Add test cases for police and skbmod")
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-04 18:39:03 -05:00
Jason Wang
51568d6940 virtio-net: re enable XDP_REDIRECT for mergeable buffer
XDP_REDIRECT support for mergeable buffer was removed since commit
7324f5399b ("virtio_net: disable XDP_REDIRECT in receive_mergeable()
case"). This is because we don't reserve enough tailroom for struct
skb_shared_info which breaks XDP assumption. So this patch fixes this
by reserving enough tailroom and using fixed size of rx buffer.

Signed-off-by: Jason Wang <jasowang@redhat.com>
Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-04 18:37:54 -05:00
Prashant Bhole
053533fc75 selftests: rtnetlink: remove testns on test fail
This patch removes testns after test failure so that next test can
continue with clean ns

Signed-off-by: Prashant Bhole <bhole_prashant_q7@lab.ntt.co.jp>
Acked-by: William Tu <u9012063@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-04 18:36:15 -05:00
David S. Miller
faa083bbe3 Merge branch 'gre-seq-collect_md'
William Tu says:

====================
gre: add sequence number for collect md mode.

Currently GRE sequence number can only be used in native tunnel mode.
The first patch adds sequence number support for gre collect
metadata mode, and the second patch tests it using BPF.

RFC2890 defines GRE sequence number to be specific to the traffic
flow identified by the key.  However, this patch does not implement
per-key seqno.  The sequence number is shared in the same tunnel
device. That is, different tunnel keys using the same collect_md
tunnel share single sequence number.

A new BFP uapi tunnel flag 'BPF_F_SEQ_NUMBER' is added.
--
v1->v2:
  rename BPF_F_GRE_SEQ to BPF_F_SEQ_NUMBER suggested by Daniel
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-04 18:35:02 -05:00
William Tu
5f280b60d2 samples/bpf: add gre sequence number test.
The patch adds tests for GRE sequence number
support for metadata mode tunnel.

Signed-off-by: William Tu <u9012063@gmail.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-04 18:35:02 -05:00
William Tu
77a5196a80 gre: add sequence number for collect md mode.
Currently GRE sequence number can only be used in native
tunnel mode.  This patch adds sequence number support for
gre collect metadata mode.  RFC2890 defines GRE sequence
number to be specific to the traffic flow identified by the
key.  However, this patch does not implement per-key seqno.
The sequence number is shared in the same tunnel device.
That is, different tunnel keys using the same collect_md
tunnel share single sequence number.

Signed-off-by: William Tu <u9012063@gmail.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-04 18:35:02 -05:00
David S. Miller
a56cd508e7 Merge branch 'enic-update'
Govindarajulu Varadarajan says:

====================
enic update

This series adds support for IPv6 vxlan offload and UDP rss along with a
bug fix in filling the rq ring.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-04 18:19:26 -05:00
Govindarajulu Varadarajan
5de0c022f1 enic: set IG desc cache flag in open
New adapter needs CMD_OPENF_IG_DESCCACHE flag to be set. If this flag is
not set, fw flushes the global IG desc cache. This flag is nop in older
adapter.

Also increment driver version

Signed-off-by: Govindarajulu Varadarajan <gvaradar@cisco.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-04 18:19:26 -05:00
Govindarajulu Varadarajan
e8588e2685 enic: enable rq before updating rq descriptors
rq should be enabled before posting the buffers to rq desc. If not hw sees
stale value and casuses DMAR errors.

Signed-off-by: Govindarajulu Varadarajan <gvaradar@cisco.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-04 18:19:26 -05:00
Govindarajulu Varadarajan
48398b6e70 enic: set UDP rss flag
New hardware needs UDP flag set to enable UDP L4 rss hash. Add ethtool
get option to display supported rss flow hash.

Signed-off-by: Govindarajulu Varadarajan <gvaradar@cisco.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-04 18:19:25 -05:00
Govindarajulu Varadarajan
7e24c64253 enic: Check if hw supports multi wq with vxlan offload
Some adaptors do not support vxlan offload when multi wq is configured.

If hw supports multi wq, BIT(2) is set in a1.

Signed-off-by: Govindarajulu Varadarajan <gvaradar@cisco.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-04 18:19:25 -05:00
Govindarajulu Varadarajan
d11790941d enic: Add vxlan offload support for IPv6 pkts
New adaptors supports vxlan offload for inner IPv6 and outer IPv6 vxlan
pkts.

Fw sets BIT(0) & BIT(1) in a1 if hw supports ipv6 inner & outer pkt
offload.

Signed-off-by: Govindarajulu Varadarajan <gvaradar@cisco.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-04 18:19:25 -05:00
Govindarajulu Varadarajan
4a464a2b06 enic: Check inner ip proto for pseudo header csum
To compute pseudo IP header csum, we need to check the inner header for
encap pkt, not outer IP header.

Also add pseudo csum for IPv6 inner pkt.

Signed-off-by: Govindarajulu Varadarajan <gvaradar@cisco.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-04 18:19:25 -05:00
Colin Ian King
129fbeecbc net: amd8111e: remove redundant assignment to 'tx_index'
The variable tx_index is being initialized with a value that is never
read and re-assigned a little later, hence the initialization is redundant
and can be removed.

Cleans up clang warning:
drivers/net/ethernet/amd/amd8111e.c:652:6: warning: Value stored to
'tx_index' during its initialization is never read

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-04 18:17:27 -05:00
Andy Shevchenko
93a00d4d61 r8169: switch to device-managed functions in probe (part 2)
This is a follow up to the commit

  4c45d24a75 ("r8169: switch to device-managed functions in probe")

to move towards managed resources even more.

Cc: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-04 18:15:17 -05:00
Andy Shevchenko
1ef7286e7f r8169: Dereference MMIO address immediately before use
There is no need to dereference struct rtl8169_private to get mmio_addr
in almost every function in the driver.

Replace it by using pointer to struct rtl8169_private directly.

No functional change intended.

Next step might be a conversion of RTL_Wxx() / RTL_Rxx() macros
to inline functions for sake of type checking.

Cc: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-04 18:15:17 -05:00
Shalom Toledo
0a8a1bf17e mlxsw: spectrum_switchdev: Check success of FDB add operation
Until now, we assumed that in case of error when adding FDB entries, the
write operation will fail, but this is not the case. Instead, we need to
check that the number of entries reported in the response is equal to
the number of entries specified in the request.

Fixes: 56ade8fe3f ("mlxsw: spectrum: Add initial support for Spectrum ASIC")
Reported-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Shalom Toledo <shalomt@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-04 18:12:44 -05:00
Colin Ian King
cc1122b00d net: phy: Fix spelling mistake: "advertisment"-> "advertisement"
Trivial fix to spelling mistake in comments and error message text.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-04 18:11:54 -05:00
Arjun Vynipadath
0913667ab3 cxgb4vf: Forcefully link up virtual interfaces
The Virtual Interfaces are connected to an internal switch on the chip
which allows VIs attached to the same port to talk to each other even
when the port link is down.  As a result, we generally want to always
report a VI's link as being "up".

Based on the original work by: Casey Leedom <leedom@chelsio.com>
Signed-off-by: Arjun Vynipadath <arjun@chelsio.com>
Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-04 18:11:30 -05:00
Linus Torvalds
661e50bc85 Linux 4.16-rc4 2018-03-04 14:54:11 -08:00
David S. Miller
19f6484fca Merge branch 'GSO_BY_FRAGS-correctness-improvements'
Daniel Axtens says:

====================
GSO_BY_FRAGS correctness improvements

As requested [1], I went through and had a look at users of gso_size to
see if there were things that need to be fixed to consider
GSO_BY_FRAGS, and I have tried to improve our helper functions to deal
with this case.

I found a few. This fixes bugs relating to the use of
skb_gso_*_seglen() where GSO_BY_FRAGS is not considered.

Patch 1 renames skb_gso_validate_mtu to skb_gso_validate_network_len.
This is follow-up to my earlier patch 2b16f04872 ("net: create
skb_gso_validate_mac_len()"), and just makes everything a bit clearer.

Patches 2 and 3 replace the final users of skb_gso_network_seglen() -
which doesn't consider GSO_BY_FRAGS - with
skb_gso_validate_network_len(), which does. This allows me to make the
skb_gso_*_seglen functions private in patch 4 - now future users won't
accidentally do the wrong comparison.

Two things remain. One is qdisc_pkt_len_init, which is discussed at
[2] - it's caught up in the GSO_DODGY mess. I don't have any expertise
in GSO_DODGY, and it looks like a good clean fix will involve
unpicking the whole validation mess, so I have left it for now.

Secondly, there are 3 eBPF opcodes that change the gso_size of an SKB
and don't consider GSO_BY_FRAGS. This is going through the bpf tree.

Regards,
Daniel

[1] https://patchwork.ozlabs.org/comment/1852414/
[2] https://www.spinics.net/lists/netdev/msg482397.html

PS: This is all in the core networking stack. For a driver to be
affected by this it would need to support NETIF_F_GSO_SCTP /
NETIF_F_GSO_SOFTWARE and then either use gso_size or not be a purely
virtual device. (Many drivers look at gso_size, but do not support
SCTP segmentation, so the core network will segment an SCTP gso before
it hits them.) Based on that, the only driver that may be affected is
sunvnet, but I have no way of testing it, so I haven't looked at it.

v2: split out bpf stuff
    fix review comments from Dave Miller
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-04 17:49:18 -05:00
Daniel Axtens
a4a77718ee net: make skb_gso_*_seglen functions private
They're very hard to use properly as they do not consider the
GSO_BY_FRAGS case. Code should use skb_gso_validate_network_len
and skb_gso_validate_mac_len as they do consider this case.

Make the seglen functions static, which stops people using them
outside of skbuff.c

Signed-off-by: Daniel Axtens <dja@axtens.net>
Reviewed-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-04 17:49:17 -05:00
Daniel Axtens
80f5974d15 net: xfrm: use skb_gso_validate_network_len() to check gso sizes
Replace skb_gso_network_seglen() with
skb_gso_validate_network_len(), as it considers the GSO_BY_FRAGS
case.

Signed-off-by: Daniel Axtens <dja@axtens.net>
Reviewed-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-04 17:49:17 -05:00
Daniel Axtens
ee78bbef8d net: sched: tbf: handle GSO_BY_FRAGS case in enqueue
tbf_enqueue() checks the size of a packet before enqueuing it.
However, the GSO size check does not consider the GSO_BY_FRAGS
case, and so will drop GSO SCTP packets, causing a massive drop
in throughput.

Use skb_gso_validate_mac_len() instead, as it does consider that
case.

Signed-off-by: Daniel Axtens <dja@axtens.net>
Reviewed-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-04 17:49:17 -05:00
Daniel Axtens
779b7931b2 net: rename skb_gso_validate_mtu -> skb_gso_validate_network_len
If you take a GSO skb, and split it into packets, will the network
length (L3 headers + L4 headers + payload) of those packets be small
enough to fit within a given MTU?

skb_gso_validate_mtu gives you the answer to that question. However,
we recently added to add a way to validate the MAC length of a split GSO
skb (L2+L3+L4+payload), and the names get confusing, so rename
skb_gso_validate_mtu to skb_gso_validate_network_len

Signed-off-by: Daniel Axtens <dja@axtens.net>
Reviewed-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-04 17:49:17 -05:00
Linus Torvalds
e64b9562ba Merge branch 'x86/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Thomas Gleixner:
 "A small set of fixes for x86:

   - Add missing instruction suffixes to assembly code so it can be
     compiled by newer GAS versions without warnings.

   - Switch refcount WARN exceptions to UD2 as we did in general

   - Make the reboot on Intel Edison platforms work

   - A small documentation update so text and sample command match"

* 'x86/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  Documentation, x86, resctrl: Make text and sample command match
  x86/platform/intel-mid: Handle Intel Edison reboot correctly
  x86/asm: Add instruction suffixes to bitops
  x86/entry/64: Add instruction suffix
  x86/refcounts: Switch to UD2 for exceptions
2018-03-04 12:12:48 -08:00
Linus Torvalds
7225a44278 Merge branch 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86/pti fixes from Thomas Gleixner:
 "Three fixes related to melted spectrum:

   - Sync the cpu_entry_area page table to initial_page_table on 32 bit.

     Otherwise suspend/resume fails because resume uses
     initial_page_table and triggers a triple fault when accessing the
     cpu entry area.

   - Zero the SPEC_CTL MRS on XEN before suspend to address a
     shortcoming in the hypervisor.

   - Fix another switch table detection issue in objtool"

* 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/cpu_entry_area: Sync cpu_entry_area to initial_page_table
  objtool: Fix another switch table detection issue
  x86/xen: Zero MSR_IA32_SPEC_CTRL before suspend
2018-03-04 11:40:16 -08:00
Linus Torvalds
4c4ce3022d Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer fixes from Thomas Gleixner:
 "A small set of fixes from the timer departement:

   - Add a missing timer wheel clock forward when migrating timers off a
     unplugged CPU to prevent operating on a stale clock base and
     missing timer deadlines.

   - Use the proper shift count to extract data from a register value to
     prevent evaluating unrelated bits

   - Make the error return check in the FSL timer driver work correctly.
     Checking an unsigned variable for less than zero does not really
     work well.

   - Clarify the confusing comments in the ARC timer code"

* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  timers: Forward timer base before migrating timers
  clocksource/drivers/arc_timer: Update some comments
  clocksource/drivers/mips-gic-timer: Use correct shift count to extract data
  clocksource/drivers/fsl_ftm_timer: Fix error return checking
2018-03-04 11:34:49 -08:00
Linus Torvalds
ff8d583621 Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq fixlet from Thomas Gleixner:
 "Just a documentation update for the missing device tree property of
  the R-Car M3N interrupt controller"

* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  dt-bindings/irqchip/renesas-irqc: Document R-Car M3-N support
2018-03-04 11:33:04 -08:00
Linus Torvalds
af8c081627 for-4.16-rc3-tag
-----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEE8rQSAMVO+zA4DBdWxWXV+ddtWDsFAlqbuK8ACgkQxWXV+ddt
 WDsiVQ//eE8Axfw4qWOyHHjozoAIu9kifvOFQIhvKviLiXHJNrD/vBI6YwD1hyD1
 rbbLilMsEl1OD1Sq3AeOUMNSSl5qUFEB+CA8vg9GznFTNRobTkL+p96Zt5xlRDu3
 lsFFV93tED+dK4D/eSGP+xYbknA8hIk/2gWPkd6hpYKyh2QdsPBYDqCnaEXvd79P
 DIP/cAjIfzqQn0FTiZ9wbaES+LPO+NoZgQRC2w9McYQ5CEMc+oAChEmPJRwpPoKy
 YdhuwoULniRNHVnVOIVfi4w9jkSPSz7YIgLeRFli/WGBYGcKeHTMFkMa12KdpuUC
 JUclOogJ5ZMbFV3C0W8XEJ7Vb9ltIevrH8MgfKP/3BScuZzbJZ+n5KkH2Gf7vcpe
 w5cZGOsKDz+35fDCdTmsFpDK9kpGzHq48JlRifOjARbdyqNwVq4emxOeQlO1ygzq
 Y9H5UeMpp/FDAm6g/bV8ezCXzwuwUDV9CwAJBD+WCiZhD2nX85FfIp1kfF2zLcUg
 Y8irqV6A/J/0BFkF7Iu9AuzTxOdo6zMLkcHEKb+sL7yGxZ2248v5gZxDoyV5iNWR
 WY4Y2GaMemZGu6+NyyLFAJzlFyACD5fSy8vT7KD6upCzwmlAtaJ3VULfTrLyi/uM
 SNZAKf3WzKBVe5h52GNGRCi5OLTteH6Yqz5m5/h8r74mBO00IrA=
 =bF96
 -----END PGP SIGNATURE-----

Merge tag 'for-4.16-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux

Pull btrfs fixes from David Sterba:

 - when NR_CPUS is large, a SRCU structure can significantly inflate
   size of the main filesystem structure that would not be possible to
   allocate by kmalloc, so the kvalloc fallback is used

 - improved error handling

 - fix endiannes when printing some filesystem attributes via sysfs,
   this is could happen when a filesystem is moved between different
   endianity hosts

 - send fixes: the NO_HOLE mode should not send a write operation for a
   file hole

 - fix log replay for for special files followed by file hardlinks

 - fix log replay failure after unlink and link combination

 - fix max chunk size calculation for DUP allocation

* tag 'for-4.16-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
  Btrfs: fix log replay failure after unlink and link combination
  Btrfs: fix log replay failure after linking special file and fsync
  Btrfs: send, fix issuing write op when processing hole in no data mode
  btrfs: use proper endianness accessors for super_copy
  btrfs: alloc_chunk: fix DUP stripe size handling
  btrfs: Handle btrfs_set_extent_delalloc failure in relocate_file_extent_cluster
  btrfs: handle failure of add_pending_csums
  btrfs: use kvzalloc to allocate btrfs_fs_info
2018-03-04 11:04:27 -08:00
David S. Miller
413033149c Merge branch 'dsa-serdes-stats'
Andrew Lunn says:

====================
Export SERDES stats via ethtool -S

The mv88e6352 family has a SERDES interface which can be used for
example to connect to SFF/SFP modules. This interface has a couple of
statistics counters. Add support for including these counters in the
output of ethtool -S.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-04 13:34:19 -05:00
Andrew Lunn
cda9f4aae3 net: dsa: mv88e6xxx: Get mv88e6352 SERDES statistics
Add support for reading the SERDES statistics of the mv88e8352, using
the standard ethtool -S option. The SERDES interface can be mapped to
either port 4 or 5, so only return statistics on those ports, if the
SERDES interface is in use.

The counters are reset on read, so need to be accumulated. Add a per
port structure to hold the stats counters. The 6352 only has a single
SERDES interface and so only one port will using the newly added
array. However the 6390 family has as many SERDES interfaces as ports,
each with statistics counters. Also, PTP has a number of counters per
port which will also need accumulating.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-04 13:34:18 -05:00
Andrew Lunn
eb755c3f6b net: dsa: mv88e6xxx: Add helper to determining if port has SERDES
Refactor the existing code. This helper will be used for SERDES
statistics.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-04 13:34:18 -05:00
Andrew Lunn
436fe17d27 net: dsa: mv88e6xxx: Allow the SERDES interfaces to have statistics
When gettting the number of statistics, the strings and the actual
statistics, call the SERDES ops if implemented. This means the stats
code needs to return the number of strings/stats they have placed into
the data, so that the SERDES strings/stats can follow on.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-04 13:34:18 -05:00
Andrew Lunn
c6c8cd5e3c net: dsa: mv88e6xxx: Hold mutex while doing stats operations
Until now, there has been no need to hold the reg mutex while getting
the count of statistics, or the strings, because the hardware was not
accessed. When adding support for SERDES statistics, it is necessary
to access the hardware, to determine if a port is using the SERDES
interface. So add mutex lock/unlocks.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-04 13:34:18 -05:00
Andrew Lunn
88c060549a dsa: Pass the port to get_sset_count()
By passing the port, we allow different ports to have different
statistics. This is useful since some ports have SERDES interfaces
with their own statistic counters.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-04 13:34:18 -05:00
Brenda J. Butler
efab163bbc tools: tc-testing: Add notap option
Add a command line arg to suppress tap output.  Handy in case
all the tap output is being supplied by the plugins.

Signed-off-by: Brenda J. Butler <bjb@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-04 13:31:15 -05:00
David S. Miller
b33cc2cec9 Merge branch 'net-ipv6-Add-support-for-path-selection-using-hash-of-5-tuple'
David Ahern says:

====================
net/ipv6: Add support for path selection using hash of 5-tuple

Hardware supports multipath selection using the standard L4 5-tuple
instead of just L3 and the flow label. In addition, some network
operators prefer IPv6 path selection to use the 5-tuple. To that end,
add support to IPv6 for multipath hash policy similar to
bf4e0a3db9 ("net: ipv4: add support for ECMP hash policy choice").
The default is still L3 which covers source and destination addresses
along with flow label and IPv6 protocol. This gives users a choice in
hash algorithms if they believe L3 only and the IPv6 flow label are not
sufficient for their use case.

A separate sysctl is added for IPv6, allowing IPv4 and IPv6 to use
different algorithms if desired.

The first 3 patches modify the IPv4 variant so that at the end of the
patch set the ipv4 and ipv6 implementations are direct parallels.

Patch 4 refactors the existing rt6_multipath_hash in preparation for
adding the policy option.

Patch 5 renames the existing netevent to have IPv4 in the name so ipv4
changes can be distinguished from IPv6 if the netevent handler cares.

Patch 6 adds the skb as an argument through the FIB lookup functions
to the multipath selection. Needed for the forwarding case.

Patch 7 adds the L4 hash support.

Patch 8 adds the hook for the netevent to the spectrum driver to update
the ASIC.

Patch 9 removes no longer used code.

Patch 10 adds a testcase for IPv6 multipath with L4 hash.

v3
- comments from Ido:
  - removed fib_info arg in patch 1; left by mistake on rebase to net-next
  - removed __get_hash_from_flowi4 declaration
  - line wrap change to spectrum_router.c to maintain 80 chars

v2
- rebased to top of tree
- added refactor of fib_multipath_hash following recent change
- plumb skb through lookup functions to multipath selection
- fix sysctl setting; was missing the data set in ipv6_sysctl_net_init
- added test case

RFC to v1:
- rebase to top of net-next
- fix addr_type in hash_keys and removed flow label as noticed by Ido
- added a comment to cover letter about choice in algorithms based on
  use case per Or's comments
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-04 13:04:24 -05:00
David Ahern
91a5c1ecba selftests: forwarding: Add multipath test for L4 hashing
Add IPv6 multipath test using L4 hashing. Created with inputs from
Ido Schimmel.

Signed-off-by: David Ahern <dsahern@gmail.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Tested-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-04 13:04:23 -05:00
David Ahern
de7a0f871f net: Remove unused get_hash_from_flow functions
__get_hash_from_flowi6 is still used for flowlabels, but the IPv4
variant and the wrappers to both are not used. Remove them.

Signed-off-by: David Ahern <dsahern@gmail.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Reviewed-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-04 13:04:23 -05:00